On the other hand you can buy an electric sprayer from Home Depot for about $75. It gets the job done in about 1\10 of the time if you are painting stucco versus a brush. Well worth the $75 on a big job even if you throw the thing in the garbage afterwards.

When you're done with the painting job, you can take the sprayer to Todo Bueno thrift store and they'll get a pretty decent price for it. (The are next door to Have Hammers). My spouse collected all the tools he doesn't use any more and they did just that in a flash.